<template>
    <router-view/>
</template>



<script>

export default {
 created() {
   //参考：https://blog.csdn.net/guzhao593/article/details/81435342 
    //在页面加载时读取sessionStorage里的状态信息
    if (sessionStorage.getItem("store") ) {
        this.$store.replaceState(Object.assign({}, this.$store.state,JSON.parse(sessionStorage.getItem("store"))))
    }

  //在页面刷新时将vuex里的信息保存到sessionStorage里
    window.addEventListener("beforeunload",()=>{
        sessionStorage.setItem("store",JSON.stringify(this.$store.state))
    })
}
 }
</script>

<style>
</style>
